Question

na sequência (1/2, 5/6, 7/6, 3/2,...), o termo de ordem 30 e

Answer 1

5/6 - 1/2 = 7/6 - 5/6
5/6 - 3/6 = 2/6
2/6 = 2/6 (é uma pa)

an = a1+(n-1).r
an = 1/2 +(30-1).2/6
an = 1/2 + 29 . 2/6
an = 1/2 + 58/6
an = 3/6 + 58/6
an = 61/6